Opening and closing device for access door of asphalt macadam synchronous seal paver

Abstract

The utility model discloses an opening and closing device for an access door of an asphalt macadam synchronous seal paver, which comprises the access door, two sides of the access door are respectively and fixedly provided with a stand column and a fixing plate, the stand column is connected with the access door through a hinge, and the opening and closing device is arranged between the access door and the fixing plate. The opening and closing device comprises a plurality of connecting plates fixedly installed on the fixing plate, the other ends of the connecting plates are fixedly connected with sliding strip clamps, sliding strips capable of sliding up and down in the sliding strip clamps are arranged in the sliding strip clamps, a plurality of lock hooks are arranged on the sides, close to the access door, of the sliding strips, lock catches matched with the lock hooks are arranged on the access door, and limiting plates are fixedly installed on the sliding strips. The limiting plate is located between the two adjacent connecting plates, an air cylinder matched with the limiting plate is fixedly installed on the connecting plate located below the limiting plate, and a control switch of the air cylinder is installed in a cab. The control switch is convenient to switch on and switch off, and the control switch is installed in a cab and is convenient for maintainers to switch on and switch off.

Description

Technical Field

[0001] The utility model relates to an asphalt gravel synchronous sealing vehicle, in particular to an opening and closing device for an inspection door of the asphalt gravel synchronous sealing vehicle. Background Art

[0002] Asphalt chip seal is a waterproof bonding layer used in the construction of roads, airport runways and bridge pavements. An inspection door is usually set in the middle of the asphalt chip seal vehicle. Due to the high chassis of the vehicle, the door lock is also located high, making it extremely inconvenient to open and close manually. Summary of the invention

[0003] The utility model aims to solve the above-mentioned shortcomings and provides an opening and closing device for the maintenance door of an asphalt gravel synchronous sealing vehicle, which comprises an maintenance door, columns and fixed plates are respectively fixedly installed on both sides of the maintenance door, the columns are connected to the maintenance door through hinges, an opening and closing device is installed between the maintenance door and the fixed plate, the opening and closing device comprises a plurality of connecting plates fixedly installed on the fixed plate, the other end of the connecting plate is fixedly connected to a sliding bar clamp, a sliding bar that can slide up and down therein is arranged in the sliding bar clamp, a plurality of locking hooks are arranged on the side of the sliding bar close to the maintenance door, a lock buckle matching with the locking hook is arranged on the maintenance door, a limit plate is fixedly installed on the sliding bar, the limit plate is located between two adjacent connecting plates, a cylinder matching with the limit plate is fixedly installed on the connecting plate below the limit plate, and a control switch of the cylinder is installed in the cab.

[0004] In order to facilitate the rapid resetting of the slide bar, a connecting rod is fixedly installed on the top of the slide bar, and the connecting rod is connected to the connecting plate adjacent to it through a resetting spring.

[0005] In order to prevent other personnel from opening the inspection door from the outside, the opening and closing device can be installed on the inside of the inspection door and the fixed plate.

[0006] The utility model has the following beneficial effects:

[0007] The utility model realizes opening of the inspection door by lifting the slide bar through the cylinder, and locking of the inspection door under the dual action of gravity and the return spring through the recovery of the cylinder. The opening and closing are convenient, and the control switch is installed in the cab, which is convenient for maintenance personnel to open and close.

[0008] The utility model has a simple structure and low cost, can be used to modify the inspection doors of existing vehicle models, and has high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0012] In the figure: column 1, inspection door 2, fixing plate 3, connecting rod 4, return spring 5, slide bar clamp 6, slide bar 7, limit plate 8, cylinder 9, lock buckle 10, lock hook 11, connecting plate 12. DETAILED DESCRIPTION

[0013] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0014] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0015] like Figure 1 and Figure 2As shown, an opening and closing device for the inspection door of an asphalt gravel synchronous sealing vehicle comprises an inspection door 2, and columns 1 and fixed plates 3 are fixedly installed on both sides of the inspection door 2, respectively. The column 1 is connected to the inspection door 2 through a hinge, and an opening and closing device is installed between the inspection door 2 and the fixed plate 3. The opening and closing device comprises a plurality of connecting plates 12 fixedly installed on the fixed plate 3, and the other end of the connecting plate 12 is fixedly connected to a slide clamp 6, and a slide bar 7 that can slide up and down therein is arranged in the slide clamp 6, and a plurality of lock hooks 11 are arranged on the side of the slide bar 7 close to the inspection door 2, and a lock buckle 10 that cooperates with the lock hook 11 is arranged on the inspection door 2, and a limit plate 8 is fixedly installed on the slide bar 7, and the limit plate 8 is located between two adjacent connecting plates 12, and a cylinder 9 that cooperates with the limit plate 8 is fixedly installed on the connecting plate 12 located below the limit plate 8, and the control switch of the cylinder 9 is installed in the cab.

[0016] Furthermore, a connecting rod 4 is fixedly mounted on the top of the slide bar 7 , and the connecting rod 4 is connected to the connecting plate 12 adjacent thereto via a return spring 5 .

[0017] When the inspection door 2 needs to be opened, the control switch of the cylinder 9 is pressed, the piston end of the cylinder 9 extends, and the limit plate 8 begins to lift upward. The limit plate 8 drives the slide bar 7 to move upward, thereby disengaging the lock hook 11 from the lock buckle 11, and the inspection door 2 is opened.

[0018] When closing the inspection door 2, the control switch of the cylinder 9 is pressed, the piston end of the cylinder 9 is retracted, and the slide bar 7 moves downward under the action of gravity. In order to facilitate the rapid retraction of the slide bar 7, the return spring 5 pulls the slide bar 7 downward until the lock hook 11 is buckled into the lock buckle 10. At this time, the inspection door 2 is closed and locked.

[0019] The limit plate 8 is between the two connecting plates 12 and can play a limiting role to prevent the lifting distance of the slide bar 7 from being too long, and can also effectively prevent the end of the slide bar 7 from being separated from the slide bar clamp 6.

[0020] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An opening and closing device for an inspection door of an asphalt gravel synchronous sealing vehicle, comprising an inspection door (2), with columns (1) and fixed plates (3) respectively fixedly mounted on both sides of the inspection door (2), the columns (1) being connected to the inspection door (2) via hinges, characterized in that: An opening and closing device is installed between the inspection door (2) and the fixed plate (3), and the opening and closing device includes a plurality of connecting plates (12) fixedly installed on the fixed plate (3), the other end of the connecting plate (12) is fixedly connected to the slide bar clamp (6), a slide bar (7) that can slide up and down is arranged in the slide bar clamp (6), a plurality of lock hooks (11) are arranged on the side of the slide bar (7) close to the inspection door (2), a lock buckle (10) matched with the lock hook (11) is arranged on the inspection door (2), a limit plate (8) is fixedly installed on the slide bar (7), the limit plate (8) is located between two adjacent connecting plates (12), a cylinder (9) matched with the limit plate (8) is fixedly installed on the connecting plate (12) located below the limit plate (8), and a control switch of the cylinder (9) is installed in the cab.

2. The opening and closing device for the inspection door of an asphalt gravel synchronous sealing vehicle according to claim 1, characterized in that: A connecting rod (4) is fixedly mounted on the top of the slide bar (7), and the connecting rod (4) is connected to an adjacent connecting plate (12) via a return spring (5).

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